Castleman is a surname. Notable people with this name include:
A. Welford Castleman Jr., American scientist Alice Barbee Castleman (1843–1926), American social leader, philanthropist, and suffragist Benjamin Castleman (1906–1982), American pathologist best known for Castleman's disease Boomer Castleman, American singer-songwriter and guitarist from Farmers Branch, Texas Charles Castleman (disambiguation), several people Foster Castleman (born 1931), former professional baseball player Frank Castleman (1877–1946), American football and baseball player, track athlete, and coach in multiple sports John Breckinridge Castleman (1841–1918), brigadier general and prominent landowner and businessman in Louisville, Kentucky Ken Castleman, president of Advanced Digital Imaging Research and author of the canonical textbook Digital Image Processing Margaret Weissinger Castleman (c. 1880–1945), American suffragist and campaigner Myron Castleman, main character in 12:01 PM Robert Lee Castleman, American country singer and songwriter Slick Castleman (1913–1998), pitcher in Major League Baseball
See also Castleman Run Lake Wildlife Management Area, near Bethany, West Virginia, USA Castleman Trailway, footpath in Southern England Castleman's disease, uncommon lymphoproliferative disorder that can involve single lymph node stations or can be systemic John B. Castleman Monument, within the Cherokee Triangle of Louisville, Kentucky, USA United States v. Castleman, a 2014 US Supreme Court decision about whether persons convicted of domestic violence misdemeanors may be barred from gun ownership